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comparison util.c @ 16:a07665727c19

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Add status command Add status command to redisplay an error message of the previous command and unsaved changes. Add pwm_err function to display and save error messages.
author Guido Berhoerster <guido+pwm@berhoerster.name>
date Tue, 08 Aug 2017 10:47:04 +0200
parents a7e41e1a79c8
children
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15:3380c8fd9776 16:a07665727c19
1 /* 1 /*
2 * Copyright (C) 2016 Guido Berhoerster <guido+pwm@berhoerster.name> 2 * Copyright (C) 2017 Guido Berhoerster <guido+pwm@berhoerster.name>
3 * 3 *
4 * Permission is hereby granted, free of charge, to any person obtaining 4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the 5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including 6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish, 7 * without limitation the rights to use, copy, modify, merge, publish,
67 67
68 return (new); 68 return (new);
69 } 69 }
70 70
71 char * 71 char *
72 xvasprintf(char **strp, const char *fmt, va_list args)
73 {
74 if (vasprintf(strp, fmt, args) < 0) {
75 err(1, "vasprintf");
76 }
77
78 return (*strp);
79 }
80
81 char *
72 xasprintf(char **strp, const char *fmt, ...) 82 xasprintf(char **strp, const char *fmt, ...)
73 { 83 {
74 va_list args; 84 va_list args;
75 85
76 va_start(args, fmt); 86 va_start(args, fmt);
77 if (vasprintf(strp, fmt, args) < 0) { 87 xvasprintf(strp, fmt, args);
78 err(1, "vasprintf");
79 }
80 va_end(args); 88 va_end(args);
81 89
82 return (*strp); 90 return (*strp);
83 } 91 }